GeoNotes: Social and Navigational Aspects of Location-Based Information Systems
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
DeDe: design and evaluation of a context-enhanced mobile messaging system
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Because I carry my cell phone anyway: functional location-based reminder applications
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Visualizing email content: portraying relationships from conversational histories
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Generating summaries and visualization for large collections of geo-referenced photographs
MIR '06 Proceedings of the 8th ACM international workshop on Multimedia information retrieval
GeoHealth: a location-based service for nomadic home healthcare workers
OZCHI '07 Proceedings of the 19th Australasian conference on Computer-Human Interaction: Entertaining User Interfaces
Annotating ecology: looking to biological fieldwork for mobile spatial annotation workflows
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
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The growing amount of location-based public postings will challenge the current visualization and access methods of location-based information. The aim of our work is to provide a clear overview of location-based postings and to support easy access to information the user is interested in. We designed a prototype using a semi-transparent heat map over a map view to visualize posting density on the area of interest. Automatically extracted keywords and dynamic time selection support the search and filtering of location-based public postings. Based on our evaluation, users found the heat map as a familiar abstraction of the location based information. Clustering and displaying the salient words as keywords over the map view was considered to be especially useful.